Home / 3,810.64-5,716.68-1,213.96

Finding the Fourth Proportional to 3,810.64, 5,716.68 and 1,213.96

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Solution

The fourth proportional to 3,810.64, 5,716.68 and 1,213.96 is: 1,821.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,810.64 : 5,716.68 = 1,213.96 : x
  2. Step 2: Convert to fraction form
    3,810.64/5,716.68 = 1,213.96/x
  3. Step 3: Cross multiply
    3,810.64x = 5,716.68 × 1,213.96
  4. Step 4: Simplify right side
    3,810.64x = 6,939,820.85
  5. Step 5: Solve for x
    x = 6,939,820.85/3,810.64
  6. Step 6: Final answer
    x = 1,821.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.